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Two-step synthesis of millimeter-scale flexible tubular supercapacitors

Flexible supercapacitors have been demonstrated to be ideal energy storage devices owing to their lightweight and flexible nature and their high power density. However, conventional film-shaped devices struggle to meet the requirements of application in complicated situations, including medical inst...

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Autores principales: Lu, Chao, Chen, Xi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9814076/
https://www.ncbi.nlm.nih.gov/pubmed/36703466
http://dx.doi.org/10.1038/s42004-020-0272-7
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author Lu, Chao
Chen, Xi
author_facet Lu, Chao
Chen, Xi
author_sort Lu, Chao
collection PubMed
description Flexible supercapacitors have been demonstrated to be ideal energy storage devices owing to their lightweight and flexible nature and their high power density. However, conventional film-shaped devices struggle to meet the requirements of application in complicated situations, including medical instruments and wearable electronics. Here we report a hollow-structured flexible tubular supercapacitor prepared from a scalable method with the same diameter as electric wires. This new supercapacitor design allows for a large specific capacitance of 102 F g(−1) at a current density of 1 A g(−1) with excellent air-working stability over 10,000 cycles. It also shows a high energy density of 14.2 Wh kg(−1) with good rate capability even at a current density of 10 A g(−1), which is superior to commercial devices (3–10 Wh kg(−1)). Moreover, the device delivers a stable energy storage capacity when encountering different flexible conditions, such as elongated, tangled and bent states, showing wide potentials in flexible and even wearable applications. Especially, it retains stable specific capacitance even after 500 bending cycles with a bending angle of 180°. The two-step fabrication method of these flexible tubular supercapacitors may allow for possible mass production, as they could be easily integrated with other functional components, and used in realistic scenarios that conventional film devices struggle to realize.
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spelling pubmed-98140762023-01-10 Two-step synthesis of millimeter-scale flexible tubular supercapacitors Lu, Chao Chen, Xi Commun Chem Article Flexible supercapacitors have been demonstrated to be ideal energy storage devices owing to their lightweight and flexible nature and their high power density. However, conventional film-shaped devices struggle to meet the requirements of application in complicated situations, including medical instruments and wearable electronics. Here we report a hollow-structured flexible tubular supercapacitor prepared from a scalable method with the same diameter as electric wires. This new supercapacitor design allows for a large specific capacitance of 102 F g(−1) at a current density of 1 A g(−1) with excellent air-working stability over 10,000 cycles. It also shows a high energy density of 14.2 Wh kg(−1) with good rate capability even at a current density of 10 A g(−1), which is superior to commercial devices (3–10 Wh kg(−1)). Moreover, the device delivers a stable energy storage capacity when encountering different flexible conditions, such as elongated, tangled and bent states, showing wide potentials in flexible and even wearable applications. Especially, it retains stable specific capacitance even after 500 bending cycles with a bending angle of 180°. The two-step fabrication method of these flexible tubular supercapacitors may allow for possible mass production, as they could be easily integrated with other functional components, and used in realistic scenarios that conventional film devices struggle to realize. Nature Publishing Group UK 2020-02-21 /pmc/articles/PMC9814076/ /pubmed/36703466 http://dx.doi.org/10.1038/s42004-020-0272-7 Text en © The Author(s) 2020 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Lu, Chao
Chen, Xi
Two-step synthesis of millimeter-scale flexible tubular supercapacitors
title Two-step synthesis of millimeter-scale flexible tubular supercapacitors
title_full Two-step synthesis of millimeter-scale flexible tubular supercapacitors
title_fullStr Two-step synthesis of millimeter-scale flexible tubular supercapacitors
title_full_unstemmed Two-step synthesis of millimeter-scale flexible tubular supercapacitors
title_short Two-step synthesis of millimeter-scale flexible tubular supercapacitors
title_sort two-step synthesis of millimeter-scale flexible tubular supercapacitors
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9814076/
https://www.ncbi.nlm.nih.gov/pubmed/36703466
http://dx.doi.org/10.1038/s42004-020-0272-7
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